Bug 29329: Remove stray character in opac-detail.tt

Bug 29329: Remove stray character in opac-detail.tt

1. Have  OpacBrowseResults on.
2. Make search with many results.
3. Go to the record detail page
4. Click 'Browse results'
5. At the bottom of the container notice the stray "s".
6. apply patch
7. Try again, the "s" is gone!

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>